console.log('tshello')
let a:string = 'helloworld'

let str:string = ''
for(let i:number = 1; i <= 9; i++){
    for(let j:number = 1; j <= i; j++){
        str = str + `${i}x${j}=${i*j} `
    }
    console.log(str)
    str = ''
    
}